Anchoring and sealing device



Aug. 13, 1963 .1. w. TAMPLEN ANCHORING AND SEALING DEVICE 2 Sheets-Sheet 1 Filed April 6, 1960 m n Tn N me m VD. W Wm A a T W. k C 0 J Y B 9 C.: m2 .l f/ F ...FKLI /luj ./u L am 3 Aug. 13, 1963 J. w. TAMPLr-:N

ANCHORING AND SEALING DEVICE Filed April e, 1960 2 'sheets-sheet 2 BY Fg.5

United States Patent O Filed Apr. 6, 1960, ser. No. 20,480

` 12 claims. (ci. 16s-18s) ware This invention relates to well tools and more particularly to a well tool 'system employing anchoring and sealing devices and to anchoring and sealing devices.

An object of this invention is to provide a new and improved well tool assembly having anchoring and sealing devices for anchoring the well tool assembly in a well ow conductor and sealing with the well -flow conductor above land below a lateral port of the Well iiow conductor.

Another object is to provide `a well tool assembly positionalble ina well ilow conductor and having anchoring and sealing devices for anchoring the well tool assembly in the well flow `conductor and sealing above and below a t lateral port of the well flow conductor wherein the anchoring and sealing devices are operable by a `downward force `imparted to the well tool assembly by means of a ilexible Vline by which the well tool assembly is lowered into the well 4ilow conductor.`

, Still another object is to provide a well tool assembly anchoring and sealing devices -for sealing above and below i alafteral port of @a well flow conductor wherein the iluid pressure exerted through the lateral port of thewell ow conductor tends to hold the anchoring and sealing devices in operativeanchoring and sealing positions.

A still further Objectis to provide a well tool assembly `having a pair ofspaced anchoring and sealing devices forV anchoring the well tool assembly in a well ilow conductor and sealing above and below a lateral port of the well llow conductor wherein the anchoring and sealing devices each include la sealing means and an expander means movable rel-ative to the sealing means kfor expanding the sealing means into engagement with the well liow conductor to anchor the well tool assembly in 'the well ilow conductor and simultaneously seal between the well tool assembly and the well dow conductor.

A still further object is to provide a well tool assembly having a pair of spacedl anchoring and sealing devices for anchoring the well toolassembly in a well ow conductor and sealingabove and below a latenal port of the well allow conductor whereinthe anchoring and sealing devices each include a sealing means and an expander' means movable relative to the sealing means for expanding the sealing means into engagement with the well ow conductor to anchor the Well tool assembly in the well flow conductor and simultaneously seal between the well tool 3,100,535 Patented Aug. 13, 1963 Vice engagement with the sealing means and to increase the force holding the lanchoring and sealing means in anchoring and sealing positions.

`Another `further Objectis to provide a well tool assembly having a pair of spaced anchoring and sealing devices for anchoring the well tool assembly in a well flow conductor and sealing above and below a lateral port of the well llow conductor wherein the anchoring and sealing devices each include a sealing means and an expander n means movable relative to the sealing means for expanding the sealing means into engagement with the well tlow conductor to anchor the well tool assembly in the well flow conductor and simultaneously seal between the Vwell tool assembly and the well flow conductor, wherein the expander means is provided with la plurality of piston `means each exposedto the pressure of the iluid from exteriorly of the well il'ow yconductor whereby the force exerted on the expander meanstending to move them into the seal means expanding position is compounded without increasing the cross-sectional area of the individual piston means. i

Another object is to provide a new `and improved anchoring and sealing device having an expansible sealing means `and an expander longitudinally movable relative to the sealing device to expand the latter and move it into anchoring and sealing engagement with a well flow conductor when the anchoring and sealing device is disposed in` a well ow conductor.

Still another object is to provide an anchoring and sealing device having expandable seal means and an expander wherein the expander is provided with pressure responsive means exposa-ble to fluid pressure for moving the expander member toward seal means expanding `position.

A further object is to provide an anchoringrand `sealing device havingan expandable seal means and an expander movable relative to lthe seal means for expanding the seal means into anchoring' and sealingposition, the expander having piston means exposable to fluid. pressure for moving the expander toward the seal means expanding position whereby the force holding the expander in seal means expanding position varies in accordance with the lluid pressure.

A stilllfurther object is 'to provide a new and improved anchoring and sealing device having an expansible seal means andan expander movable longitudinally relative to the seal means for expanding the seal means into anchoring and sealing engagement with a well llow conductor wherein the expander is provided with pressure responsive means exposed to the duid pressure' within the well flow conductor which tends to move the expander member toward 'the seal means expanding position where- Iby the force tending to hold the expansible anchoring and sealing means in anchoring and sealing engagement varies directly with the fluid pressure within the well oW conductor. Y

assembly and the well ilow conductor, the expander hav- A stillfurther object is to provide a new land improved anchoring and sealing device having an expansible` seal `means and an expander movable longitudinally relative rto the seal means for expanding the seal means into anchoring and sealing engagement with a. well flow conductor wherein the pressure vsensitive means comprises a. plurality `of piston means each exposedl to the pressure of the iluid the well ilow conductor whereby the effective force of Ithe fluid pressure tending to hold the tion is compounded in accordance with the number of piston means provided.

Additional objects and advantages of the invention will be readily apparent from the reading of the following description of a device constructed in accordance with the invention, and reference to the `accompanying drawings thereof, wherein;

FIGURE l is a vertical View of the well tool assembly embodying the invention installed in a well flow conductor or tubing string within the casing of a well;

FIGURE 2 is a vertical sectional view of one of the anchoring and sealing devices employed in the well tool assembly illustrated in FiGURE 1; y

FIGURES 3 and 4 are cross sectional views taken on lines I3-3 and 4-4 respectively of FIGURE 2; and

FIGURE 5 is a vertical sectional view of a modied form of the anchoring and sealing device.

Referring now particularly `to FIGURE 1 Vof the drawi ing, the well tool assembly is` shown disposed in a well ow conductor or tubing string 11. disposed within the casing 12. of a well. The well low conductor 11 i is formed of tubing sections 13 -Whose adjacent ends are well flow conductor.

The well tool assembly 10i includes a pair of longitudinally spaced anchoring and sealing devices 22a and 225,

identical in structure, which are disposed on opposite sides of the lateral ports 16 of the well-flow conductor whereby the gas owing into the well ow conductor through the lateral ports cannot pass either downwardly or upwardly between the anchoring and sealing devices and the internal wall surfaces of the well flow conductor, but must ow through the lateral ports 24 of the gas lift valve Z5 connected to andv between the anchoring and sealing devices 22 by means of the couplings 26. yThe gas lift valve may be of the type shown in the patent to Cummings, 2,642,889, which operates in the manner set forth in the patent to Cummings to cause the gas enteringinto the gas lift valve to lift the well uids to the surface. v

The well tool assembly is positioned in the appropriate location relative to the lateral ports 16A of the well now conductor 11 by the collar stop 28 which is anchored at the collar recess 29 by means of thebosses 30a of the collet fingers 30 thereof. The collar stop may be of fthe type illustrated in Figure 54 on page 4151 of the Composite Catalog of Oil Field Equipment and Services, 1957-58 edition.

The collar stop, the anchoring and sealing devices, and the gas lift valves are provided with communicating longitudinal ilow passages whereby the well fluids from below the well tool assembly may ow upwardly through the collar stop and through the well tool assembly past the anchoring and sealing devices 22 and thence to the surface. The lifting gas'is introduced into such contin-uous flow passage through the gas lift valve.

Each of th'eanchoring and sealing devices Z2 includesy a tubular mandrelV or body 31 having a lower section 31a,

l,a connector section 32 threaded into the upper end of -therlower section, a cap section 33 threaded on the upper end of a connectorsection and a resilient anchoring and 4 tending shoulder or surface which abuts the outer surface of the lower portion of the sealing element 34 and an upwardly facing annular shoulder 36 which abuts the` lower end of the element '34. The connecting section 32 of the mandrel has an upper -portion of reduced external diameter which provides an upwardly lfacing annular lshoulder 38 adapted to engage the lower end of the anchoring and sealing element 34 and an annular surface 39 which engages the internal end portion surface of the lower portion of the resilient element 34. The lower end portion of 'the sealing element is thus held between the surfaces 35' and 39 of the capi section and the connector section as well as being bonded to the cap section.

The connector section is enlarged intermediate its ends to provide an upwardly facing shoulder 40 engageable with the lower end of .the cap section 33 to `limit longitudinal movement of the connector section relative to the cap section :and position the upwardly facing shoulders 36 and 38 of the cap section and the connector section in alignment wherein both are in engagement with :the lower end of the resilient sealing element The lower section 31a has lateral ports 42 immediately below the lower end of the connector .section whereby fluid pressure may enter into the interior of the mandrel from exteriorly thereof. The lower lend of the lower section 31a of the mandrel is reduced and provided with external threads whereby it may be connected to other well tools, such as the gas valve 25, -hy means of a coupling or collar 26.

The resilient sealing element 34 is expandable out.V

wardly into anchoring and sealing eng-agement the internal wall surface of a tubing section `13 by an expander member y4 5 having Ian upper expander section 46 and a lower piston section 47 ithreadedly connected to upper downwardly and inwardly extending surface 52, an

intermediate cylindrical surface 53 and a lower downwardly and inwardly inclined expanding surface 514 'which'extends substantially parallel to the upwardly and outwardly ,inclined surface 35 of the cap section 33 of the mandrel 31. The resilient anchoring and sealing element 3'4 is o provided with internal lannular surfaces l56, 57, and 58 which correspond -in conguration to the surfaces 52, 53

and 54 of the expander section, but which are of smaller internal diameter than :the'external `diameterlof thecorresponding surfaces of the expander section so that the exp-ander vsection expands the portions of the resilient sealing element and compresses them aga-inst the internalV surface of the tubing section 13 when the expander member 45 is moved downwardly from an upper position, wherein the cylindrical surface 53 of the expander section is disposed above and out of engagement 'Withthe intermediate internal cylindrical surface `57 Vof Ithe resilientV provided with vent ports 60 which open outwardly below rthe lower end of the expander section 46 whereby any l uid between the expander section and the resilient sealwhich engages the internal wall surfaces of the lower mandrel section 31a below the rlateral port 42. The connector :section has a similar intern-al annular recess or -groove `66 in which is disposed a sealing means 67, such as an O-ring which seals between the connecting sub and the piston section above the lateral port. A suitable sealing means or O-ring 68a is disposed between the lower end of the cap section and the upper end of the ,lower -section of the mandrel to engage and seal thereibetween and also to engage and seal with the outer suryface of the connector section 32.

It will now be apparent that the pressure of any Huid ilowing through the lateral ports d2 of the lower section 31a of the mandrel 31 into the chamber 69 between the lower end of the connector section and the piston iiange will act upon the upper annular surface 68 of the piston flange `62 to move the expander member 45 into ithe resilient sea-ling element of the mandrel 3-1to cause it to expand and move into anchoring and sealing en-` gagement with the internal wall surface of the tubing section 13. The pressure of the fluid in the tubing Istring exteriorly of the outer mandrel w-ill thus tend to move the expander member into "the outer mandrel and increase the force with which the resilient sealing element 34 is held in engagement with the -tubing section so that the greater the force which might tend. to cause iluid to flow between the lsealing element 34 and the tubing string, .the lgreater will be the `force tending to expand the sealing element into sealing and anchoring engagement with the tubing string.

t The anchoring and sealing devices 22a and 22b are identical in construction with the ilower anchoring and sealing device -2r2b being reversed longitudinally whereby the expansion ofthe resilient sealing element 34 of the anchoring and sealing device 22b is effected by movement of the sealing element 34 downward relative to the expander section d5 whereas the expansion of the seal-` L,

ing element 34 of lthe upper anchoring and sealing device `22a is etected by downward movement of the expander relative to the sea-ling element thereof.

In use; when it is desired to locate the well tool assembly Iii, which includes a pair of the anchoring and sealing devices connected to opposite ends of the gas lift valve 25, in such position in the tub-ing `section 11 `that the anchoring and sealing devices are disposed on opposite sides of the lateral apertures or ports 16 of the tubing section 13 and in sealing and anchoring engagement with the tubing section above :and below the lateral apertures 16 so that any gas pumped into the Kannular passageway 17 between the tubing section and the well casing 12 will be caused `to flow through the ports 24 of the gas lift Avalve 25 and thence through the gas lift valve andthrough the upper anchoring and sealing device to the tubing string above the well tool Iassembly land thence to the surface,

` the collaristop 28 is first positioned in the tubing string at the collar recess 29 iat the lower end of thetubing section 13 provided with the lateral ports 16.

The well tool assembly is then connected to a flexible line by means of a suitable running tool yand the usual set of iiexible line equipment and lowered thereby into the tubing string 11. Since the running tool is connected to the upper end of the expander member 45 of the upper anchoring and sealing device 22a, the mandrel 31 thereof is held in a lower position relative to the expander member 45 by the weight of the other ,elements of the `well tool assembly, the upper surface `68 of piston iiange 62 engaging the lower end of the connector section 32 to limit downward movement of the mandrel relative to the expander member. Tlhe sealing element 34 is therefore in its contracted condition since the expander section is not in expanding engagement therewith.` i

The expandermember 45 of the lower anchoring and sealing vdevice 22b is suspended from the outer mandrel 31 thereof by the engagement of the surface 68 of the .ing land sealing devices.

piston ilange 62, which of course is downwardly facing, with the upper `end of 'its connector section 32 so that the resilient anchoring and sealing device element `34 is in its contracted position and out of engagement with the walls of the well tubing.

The well tool assembly 1u is lowered into the tubing string until the lower end of the expander member 45 of the lower anchoring and sealing device engages the `collar stop which thus locates the well tool assembly in proper position relative to the later-al ports 16 of the tubing string with the two anchoring and sealing devices positioned above and below the lateral ports 16 of the tubing section 13. The expander member 45 `and the resilient sealing Yelement 34 of the lower anchoring and sealing device 22rb move longitudinally relative to one another whereby the resilient sealing element 34 of the lower anchoring land `sealing device 22h is expanded into engagement with the intern-al walls of the tubing string.

Downward jars are then imparted by means of the flexible line to the running tool and to the expander member 45 of the upper ianchoring and sealing device 22a to cause tbe expander members of `both the upper yand lower anchoring and sealing devices to move inwardly relative to their mandrels 31 to expand the anchoring land sealing elements 34 thereof into anchoring and sealing engagement with the tubing. i Therunning tool is. then disengaged `from the upper end of the expander member 45 of the upper anchoring and sealing device and removed from the well.

A lift gas, such as air, is then forced downwardly under pressure into the inner ann-illus or passageway 17 between the well casing and the tubing `string and through the aperture 16 into the chamber 72 of the well tubing formed between the `expanded seal-ing elements 34 of the anchori The gas under pressure iiows inwardly through the ports Z4 of the gas .lift valve to mingle with the well fluids ilowing through the collar `stop and through the longitudinal bore of the anchoring and sealing device 22a to Iaid in lifting the well fluids to the` surface. enters through the ports `42 of the outer m-andrels 31 of the upper and lower anchoring and sealing devices and exerts a force on the expandermernbers 45 thereof which tends to cause the expander members 45 to move further inwardly relative to and further expand the resilient seal elements 34 thereof thereby causing the well tool assembly to be more securely locked in the well tubing. The pressure in the well tubing below the well tool assembly is of course smaller than the pressure of the lift gas being introduced into the lannullus 17 and therefore the chamber 72. It will thus be seen that whenever the: pressure of the lift gas increases, which mighttend to cause the gas to ow or leak between the'sealing elements and the well tubing, the force acting on the piston tlanges 62 `also increases to exert la greater expanding force on the resilient seal elements land thus prevents any such leakage.

When it is desired to remove the well tool assembly from the well, the annular space is opened to the atmosphere at the surface to relieve the pressure acting on the piston flanges of the anchoring and sealing devices which tends to cause the expander members to hold the anchor- `ing and sealing elements 34 in their operative anchoring then causes the expander member 4S of the upper `anchoring and sealing device to move upwardly relative to its resilient sealing element and out of expanding engagement therewith until the piston flange thereof engages the lower Simultaneously the iluid under pressure end of the connector section. The sealing element thus is `freed to contr-act and move out 'of anchoring and sealing engagement with the tubing section 13. Further upward movement imparted to the well tool assembly then causes the mandrel 30 of the upper anchoring and sealing device 22a, the well tool 25 and the mandrel '30 of the lower anchoring and sealing device 22 to move upwardly thereby causing relative movement between the sealing element 34 of the lower anchoring and sealing device and its exdevice moves upwardly relative to the expander member thereof until the shoulder 68 of the piston flange 62 thereof engages the adjacent end of the connector section 32 thereof. The expander member 45 of the lower anchoring and sealing device will then move upwardlywith the well tool assembly as it is Vmoved upwardly through the tubing for removal from the tubing string.

Thel collar stop 28 may then be removed from the tubing string if so desired or may be left in position for use in further operation ofthe well. l v

It will be apparent that the collar stop 28 may be connected to the lower end ofthe expander member 45 of the lower anchoring and sealing device whereby it can be lowered into the tubing string and removed therefrom simultaneously with the lowering and removal of the well ,tool assembly into yand-from the tubing string.

It will further be appa-rent that while a particular gas lift valve has been illustrated as being connected between -th'e upper and lower anchoring and sealing devices of the well tool assembly, that any desired well device may be connected there between.

It will be now seen that a new and improved well tool assembly has been illustrated and described which includes -a well tool or device 25 to whose opposite ends are secured anchoring and sealing devices 2,2 adapted to seal between the well tool assembly and a well Aflow conductor in which the well tool -assemblyis located and above and below such well tool or device.

It will further be seen that lthe well Vtool assembly may be easily lowered, Voperated and removed from a well flow conductorby means of a liexible line and that the well tool assembly may be lanchored in anchoring and sealing position and Vremoved from such anchoring and sealing position by downward or upward jars imparted to the well tool assembly by means of the 'flexible line. .A

VIt will further be seen thatV the anchoring and sealing devices of the well tool assembly are provided with pressure responsive means exposed to the fluid pressure within y the well flow conductor between the anchoring and sealing devices which increases the force tending to force the anchoring land sealing devices into anchoring and sealing engagement with the well flow conductor whenever the fluid pressure within the well ow conductor between the `anchoring and sealing devices increases.

It will lfurther be seen that a new and improved anchoring and Vsealing device has been illustrated and described which includes an outer tubular mandrel or body 31 having a tubular resilient expanda-ble anchoring andV sealing element on one end thereof and an expandermember 45 disposed. f` Y YIt will further be seen that the mandrel of the anchoring and sealing device has the resilient anchoring and sealing means extending'fronr-one end thereof and that the ,8 other end of the mandrel is connectable to any desired well tool.

In FIGURE 5 is illust-rated a modified form of the anchoring and sealing device illustrated in FIGURES 1 through 4. The anchoring and sealing device 100 includes an outer tubular mandrel or body 102 having a resilient anchoring and sealing element 104 at one end thereof securedibetween the upper ends of the Cap section 105 and a connector section 106 in the same manner as the resilient anchoring and sealing element 34 of the anchoring and sealing -device 22 is secured lby the identically formed cap section 33 and connector section 32 thereof.

An intermediate mandrel section 107 is threaded on the lowerlend ofthe connector section 106 and has a lower portion of reduced internal diameter provided with an internal recess 109 in which is ydisposed a sealing means 110 which may be of any suitable type, such as an O-ring. A lower`mandrel section 112 is threaded on the lower end portion of the intermediate mandrel section `and has a reduced externally threaded portion 114 to which may be connected a well tool, such as the valve 25, by means of the coupling or collar 26. Tihe intermediate mandrel section is provided with lateral ports 116 disposed immediately below the connector section 107 and the lower mandrel section 112 is provided with lateral apertures or ports 117 disposed immediately below the 'lowerend `of the intermedi-ate section 107. v

The expander member has an upper `section 121 which is identical with the expander Vsection 46 ofthe anchoring and-sealing device of FIGURES 1 through 4 and has a flange 122 on the upper end thereof providing an underout annular shoulder 12.3 engageable 4by running `and pulling tools. The expander section 121 is enlarged adjacent its lower end portions to provide an inwardly and `downwardly extending annular surface 124, a cylindrical surface `125 and a downwardly and inwardly inclined land 130, respectively, of thesealing element 104 to vexpand the sealing'element into anchoring and sealing engagement with the internal wall surfaces of a tubing section 13 of a tubing string or Wellflow conductor T.

The expander member has an intermediate piston section 133 having Ian upper end threaded into the lower end of the expander section 121 and a lower end provided with an external piston flange 135. The piston ange is provided with an external annular recess 136 in which is Vdisposed an O-ring 137 or other suitable sealing means which sea-ls :between the internal wall surfaces of the intermediate mandrel section 107-and the piston flange. A lower piston section 138 has an upper end threaded intouthe lower end of the intermediate piston sectionA and is provided at its lower end with a pistonV flange 140 having an external annular recess 1-41 inwhich is `disposed an O-ring 142 orother suitable sealing element which engages the internal Wall surfaces of the lower mandrel section 112. f

The lower mandrel section has a vent port disposed immediately ibelow the end of the piston ange 135 ofthe intermediate piston section whereby any 4fluids trapped below the piston ange 135 and above the internal upwardly facing shoulderV 152 of the intermediate mandrel section may flow into the longitudinal bore of the expander member when .the expander member moves longitudinally in the outer mandrel toward an operative position wherein it engages andexpands the sealing element 104. The port 150 of course also permits -fiow of fluids into the space between` the piston flange 135 and the shoulder 152 of Vthe intermediate mandrel section when the expander moves in opposite direction. v

The connector section 106 has an internal annular recess 153 in which is disposed an 0-ring V154 or other suitdevice 100 functions in exactly the same manner as the anchoring and sealing devices 22 illustrated in FIGURES 1 through 4 except that the provision of the pair of longitudinally spaced piston flanges 135 and 140 multiplies or compounds the force exerted 'by the iluid pressure externally of the mandrel which enters both into the piston chamber 155 `formed between the connector section 106 and the piston ange 135 of of the intermediate piston section 133 to exert a force on the piston ilange 135 and into the chamber e formed between the lower end of the intermediate section and the upper end of the piston flange 140 to exert a force yon the piston flange 140 tending to cause the expander member to move into expanding engagement with the sealing element 164. It will thus be apparent that the provision of a pair of piston flanges 135 and 146 etectively multiplies the area of the piston means `of the expander member which is exposed to the fluid pressure which tends to move the expander member into expanding engagement with the anchoring `and sealing means 104.

It will now be seen that a new and improved anchoring and sealing device which may be used in the same manner as the anchoring and sealing devices 22 illustrated in HGURES 1 through 4 has been illustrated and described and includes anouter mandrel connectable at one end with any suitable well device and provided at the other end with a tubula-r resilient expansible sealing means Viiwhich is movable toward expanded position by an expander member 12@ longitudinally movable in the mandrel 102 and having a plurality of piston means engageable with the outer mandrel and exposed to .the pressure 1of the l-uids exteriorly of the mandrel which exert a force on the piston means for moving the piston member toward expanding engagement with the anchoring and sealing means of the `outer mandrel. i p t rIt will further be seen that although the expander member 124) has been provided with only a pair of piston llanges, it will be apparent that any desired number of such piston flanges may be provided, in which event an additional intermediate mandrel, such as the mandrel section 107, would be provided between the connector section 166 and the lower mandrel section 112 of the mandrel for each said additional piston flange.

`It will now be further seen that the provision of a plurality of piston flanges causes a small increase in the pressure of the iluidV in the passage or compartment 164 of the tubing string Ito cause a large increase in the force in the same manner as theanchoring and sealing devices -22 illustrated in FIGURES 1 through 4.

If desired the expander lmembers of the anchorin-g and sealing :devices llili may be moved from their sealing means expanding positions in their mandrels 162 by introduoinig pressure into the tubing string at the surface while opening to the atmosphere the annular passageway 17 between the tubing string and the well casing so that the ilufid pressure entering through the ports 15d of the low piston sections V12S-8 exerts a force on piston anges 135 of the intermediate piston sections 133- which moves the expander member outwardly of the mandrel and out of expanding engagement with the sealing elements 104. In

this event the flexible lineand pulling tool would merely remove the well tool assembly employing these anchoring and sealing devices and would not have to move the expander members out of engagement with the sealing elements.

The foregoing description of the invention is explanatory only, and chan-ges in the details of the construction illustrated may be made by those skilled in the art, within the posite sides of said lateral port, each of said anchoring and sealing devices having a tubular expandable means and an` expander telescopable inwardly relative to the expandable means and engageable therewith for expanding said expandable means into anchoring and sealing engagement withthe well flow conductor, said expanders of said anchoring and sealingrdevices being longitudinally rnovable in opposite directions toward expanding engagement with their associated expandable means; and fluid pressure piston and cylinder mea-ns on said anchoring and sealing i devices and having communication with `the exterior of said devices fort-conducting iluid pressure to said piston and cylinder means `for lmoving said expander-s longitudinally into expanding engagement with their associated expandable means.

2. A well tool assembly positionable in a well flowV conductor having a lateral port, including: a well tool; and a pair of anchoring and sealing ldevices connected to said well tool at opposite ends of said well tool, said Well tool assembly being positionable in the well flow con- -ductor'with said anchoring and sealing devices disposed on opposite sides of said lateral port, each of said anchoringand sealing'devices having a tubular expandable means andan expander telescopable inwardly relative to the expandable means and engageable therewith for expanding said expandable means into anchoring and sealing engagement with the well flow conductor, piston and cylinder means connected with said expander and said expandable means and having communication with the exterior of said anchoring and sealing device for conducting fluid pressure from exteriorly ofsaid device to said piston and cylinder means to move said expander longitudinally to telescope into and expand said expandable means to eiect a seal between said well tool and said well oW conductor, said well tool assembly having a longitudinal passageway therethrough, said Well tool providing for ow of iluid frornsaid lateral port into said longitudinal passageway, said expanders of said anchoring and sealing devices being longitudinally movable in opposite ldirections toward expanding engagement with said expandable means.

3, A well tool assembly positionable in a well iiow` conductor having a lateral port, including: a Well tool; and a pair of anchoring and sealing devices connected tosaid Well tool at opposite ends-of said well tool, said well tool assembly being positionable in the well ilow conductor with said anchoring and sealing devices disposed on opt posite sides of said lateral port, each of said anchoring .and sealing devices having a tubular expandable means and an expander telescopable inwardly relative to the expandable means and engageable therewith for expanding said expandable means into anchoring and sealing engage- `ment with the well ow conductor, said expanders of said anchoring and sealing devices extending outwardly in opposite directions from their associated expandable means and said well device whereby one of said expander members may be secured to a lexible line for movemen thereby through the well flow conductor.

4.V A well tool assembly positionable in a well o conductor having a lateral port, including: ya well tool; and a pair ofanchoring and sealing devices connected to said well tool at opposite vends of said well tool, said well tool assembly being l'positionable in the well flow conductor with said anchoring and sealing devices disposed on opposite sides of said lateral port, each of said anchoring and sealing devices having a tubular expand- Yexpanders may be secured to aexible line for movement thereby through a well flow conductor.

15. A well tool assembly positionable in a well flow conductor having -a lateral port, including: la well tool; and a pair of anchoring and sealing devices connected to said well tool at opposite ends of said well tool, saidV Well tool assembly being positionable in the well ilow conductor with said anchoring and sealing devices disposed on opposite sid ott said lateral port, each of said anchoring and sealing devices having a tubular expand-able means and an expander telescopable inwardly relative to the expandable means and Vengageable therewith `for expanding said with the well ilow conductor, said expanders of said v anchoring and seal-ing devices being longitudinally movl 'able in opposite directions toward expanding engagement with said expandable means thereof, said expanders of said anchoring and sealing devices extending Aoutwardly in opposite directions from their associated expandable means and said well device whereby one of said expanders may `be secured to a iiexible line `for movement thereby through a well -flow conduct-or.

6. A well tool assembly positionable in a well flow conductor having a lateral port, including: a Well tool; and Aa pair of anchoring and sealing devices connecte-d to said well tool at opposite ends of said well tool, said well tool assembly being positionable in the Well dow conductor with said `anchoring and sealingdevices disposed on opposite sides of said lateral port, each of said anchoring and sealing devices 'having an expandable means and an expander movable relative to the expandable means 'and engageable therewith tor expanding s aid expandable means into anchoring and sealing engagement with the well flow conductor, said expanders being provided with means responsive to the fluid pressure within said well ow conductorr'ior exerting forces on said expanders tending to move the expanders into expanding engagement with said l2 apertures providing iluid flow communication between th interior of the well flow conductor and the interior of said mandrel for exposingsaid piston means to iluid pressure from the interior of the well flow conductor.

8. A well tool including: a mandrel having a passageway land a lateral port :communicating exterior of the mandrel with kthe passageway; an expansible member carried by said mandrel; and an expander movably carried by said mandrel :and engageable with said expansible member when moved in lone direction relative to said mandrel for expanding said expansible member; and piston means on sai-d expander exposed to iluid pressure from exteriorly of the mandrel through said lateral port and responsive to said fluid pressure to move said expander in said one direction.

9. A well tool including; a mandrel having a longitudinal passage and a plurality of longitudinally spaced lateral ports communicating the exterior of the mandrel with said passageway; an expandable member carried by said mandrel; and an expander movable longitudinally relative to said mandrel and engageable with said expandable member for expanding said member when moved in one longitudinal direction relative to said expandable member, said expander being provided with a plurality of longitudinally spaced separate piston and cylinder means each exposed to the fluid pressure from the exterior of the mandrel through an associated one of said plurality of lateral ports, said `fluid pressure exerting from exteriorly of the mandrel a force on each of said piston and cylinder expandable means, said anchoring and sealing devices Y mandrel, said rnandrel being provided with aperture providing duid flow communication between the interior of the well iiow conductor and the interior of said mandrel for exposing said piston means to fluid pressure lfrom the interior of said well flow conductor to move said expander.

7. lA lwell tool assembly positionable in a well flow conductor having la lateral port, including: a well tool; and a pair of anchoring and sealing devices connected to said well tool at opposite ends of said well tool, said well tool assembly being positionable in Vthe well 'ilow conductor with said anchoring and sealing devices disposed on opposite sides of said lateral port,each of sai-d anchoring and sealing devices having an :expandable means and an expander engageable therewith =for expanding said expandable means into anchoring and sealing engagement and sealing devices each including a mandrel, .said expandable means being carried by said mandrel, `said pressure :responsive means including a plurality of spaced piston means on each expander, said mandrel being provided with means tending to move said expander in said one direction.

l0. A well tool including: a mandrel having, a longitudinal passageway anda lateral port communicating the exterior of the mandrel with the passageway; an expandable member carried by said mandrel on one end thereof; and an expander longitudinally movable in said passage of said mandrel and engageable with said expandable member for expanding said expandable member upon movement of said expander in one longitudinal direction in said passageway, said mandrel and said expander having cooperable means providing a chamber communicating with said lateral port, saidexpander having piston means disposed in said chamber whereby uid pressureV from exterior of said mandrel exerts a force through said Vlateral port' on said piston means of said expander tending to move said expander in said one direction.

l1. A well tool including: a mandrel having a longitudinal passageway and a lateral port communicating the exterior of the mandrel with the passageway; an expandable member carried by'said mandrel on one end thereof; and an expander longitudinally movable in said passage of said mandrel and engageable with said yexpandable member for expanding said expandable member upon movement of said expander in one longitudinal direction in said passageway, said mandrel and said expander having cooperable means Aproviding a chamber communicating with said lateral port whereby uid pressure from exterior of said mandrel exerts a force through said lateral portof said expander tending to move said'expander in said rone direction, said cooperable means comprising ananrnular external ilange on said expander member andV expansiblemember carried by said mandrelv on one 'end thereof; and an expander movable in said passageway and engageable with said expandable member upon movement of said expander member in one longitudinal direction relative to said mandrel; and cooperable means 13 on said mandrel and said expander and exposed to fluid pressure responsive to the pressure from exterior of the mandrel through said lateral ports for moving said expander in said one direction, said cooperable means including a plurality of longitudinally spaced external 5 anges on said expander member and longitudinally between a pair of said internal annular shoulders, seall0 2,813,588

UNITED STATES PATENTS References Cited in the ile of this patent OReilly Nov. 

1. A WELL TOOL ASSEMBLY POSITIONABLE IN A WELL FLOW CONDUCTOR HAVING A LATERAL PORT, INCLUDING: A WELL TOOL; AND A PAIR OF ANCHORING AND SEALING DEVICES CONNECTED TO SAID WELL TOOL AT OPPOSITE ENDS OF SAID WELL TOOL, SAID WELL TOOL ASSEMBLY BEING POSITIONABLE IN THE WELL FLOW CONDUCTOR WITH SAID ANCHORING AND SEALING DEVICES DISPOSED ON OPPOSITE SIDES OF SAID LATERAL PORT, EACH OF SAID ANCHORING AND SEALING DEVICES HAVING A TUBULAR EXPANDABLE MEANS AND AN EXPANDER TELESCOPABLE INWARDLY RELATIVE TO THE EXPANDABLE MEANS AND ENGAGEABLE THEREWITH FOR EXPANDING SAID EXPANDABLE MEANS INTO ANCHORING AND SEALING ENGAGEMENT WITH THE WELL FLOW CONDUCTOR, SAID EXPANDERS OF SAID ANCHORING AD SEALING DEVICES BEING LONGITUDINALLY MOVABLE IN OPPOSITE DIRECTIONS TOWARD EXPANDING ENGAGEMENT WITH THEIR ASSOCIATED EXPANDABLE MEANS; AND FLUID PRESSURE PISTON AND CYLINDER MEANS ON SAID ANCHORING AND SEALING DEVICES AND HAVING COMMUNICATION WITH THE EXTERIOR OF SAID DEVICES FOR CONDUCTING FLUID PRESSURE TO SAID PISTON AND CYLINDER MEANS FOR MOVING SAID EXPANDERS LONGITUDINALLY INTO EXPANDING ENGAGEMENT WITH THEIR ASSOCIATED EXPANDABLE MEANS. 